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Jack Anderson

#77 - Relief Pitcher

Boston Red Sox

Bats / Throws Right / Right
Date of Birth 11/23/1999 (26)
Height, Weight 6'3", 197 lb
Hometown Tampa, FL

2026 Season Stats

MLB Rank MLB Average
Sv IP ERA WHIP K% BB%
0 8.0 3.38 1.25 18.8% 6.3%
114th 1
Sv
264th 14.0
IP
138th 4.85
ERA
128th 1.47
WHIP
230th 22.0%
K%
55th 10.7%
BB%
FB MPH SwStr% CSW% Str-ICR MTK% PLV PLA
90.4 10.5% 25.8% 55.6% 4.8% 4.87 3.40
331st 94.2
FB MPH
230th 11.8%
SwStr%
267th 28.3%
CSW%
53rd 50.1%
Str-ICR
165th 5.6%
MTK%
164th 4.78
PLV
95th 4.35
PLA

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Jack Anderson Overview

Hide 2026 MLB Percentile | Hide 2026 MLB Average
Year Team G GS IP W-L Sv Hld ERA WHIP xERA FIP xFIP PLA K% BB% H/9 HR/9 BABIP HR/FB% LOB% ICR GB% SwStr% CSW% IPR PLV
2026 BOS 3 0 8.0 0-0 0 0 3.38 1.25 5.43 4.01 3.80 3.40 18.8% 6.3% 9.0 1.13 .304 20.0% 81.4% 33.3% 37.5% 10.5% 25.8% 0.50 4.87
RP MLB Percentile 6 0 24 0-50 0 0 60 62 24 51 65 72 33 82 38 41 45 32 73 69 26 34 23 53 51
RP MLB AVG 11 1 14.0 1-1 1 2 4.85 1.47 4.55 4.57 4.47 4.35 22.0% 10.7% 8.9 1.17 .298 18.1% 71.6% 37.6% 44.1% 11.8% 28.3% 0.48 4.78
Career 3 0 8.0 0-0 0 0 3.38 1.25 5.43 4.01 3.80 3.40 18.8% 6.3% 9.0 1.13 .304 20.0% 81.4% 33.3% 37.5% 10.5% 25.8% 0.50 4.87

Jack Anderson Repertoire

2026 All
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Jack Anderson Game Log

Jack Anderson Standard

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Year Team G GS IP W-L QS Sv Hld P Strikes Balls TBF H 1B 2B 3B HR K BB HB WP
2026 BOS 3 0 8.0 0-0 0 0 0 124 85 39 32 8 6 1 0 1 6 2 0 0
RP MLB Percentile 6 0 24 0-50 0 0 0 22 23 82 21 68 60 63 18 39 16 85 47 39
RP MLB AVG 11 1 14.0 1-1 0 1 2 244 154 90 62 13 9 3 0 2 14 6 1 1
Career 3 0 8.0 0-0 0 0 0 124 85 39 32 8 6 1 0 1 6 2 0 0

Jack Anderson Advanced

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Year Team K% BB% AVG SLG OPS wOBA BABIP BACON xAVG xwOBA xBABIP xwoBACON EV FB EV LA xERA
2026 BOS 18.8% 6.3% .267 .400 .713 .318 .304 .333 .287 .371 .315 .436 85.2 94.1 11.8 5.43
RP MLB Percentile 33 82 36 43 51 52 45 46 17 24 28 18 83 18 57 24
RP MLB AVG 22.0% 10.7% .248 .401 .737 .329 .298 .328 .240 .328 .284 .370 88.2 89.4 13.1 4.55
Career 18.8% 6.3% .267 .400 .713 .318 .304 .333 .287 .371 .315 .436 85.2 94.1 11.8 5.43

Jack Anderson Pitch › Mix

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Year Team FF% (MPH) SI% (MPH) FC% (MPH) SL% (MPH) ST% (MPH) CB% (MPH) CH% (MPH) FS% (MPH) KN% (MPH) Fastball% Secondary%
2026 BOS 36.3% (90.4) - - 21.8% (82.5) 11.3% (77.9) 8.1% (77.2) - 22.6% (81.4) - 36.3% 63.7%
RP MLB Percentile 50 (5) - - 43 (8) 19 (2) 21 (17) - 60 (5) - 18.8% 81.0%
RP MLB AVG 35.7% (94.2) 26.6% (93.9) 20.9% (89.2) 27.1% (85.5) 23.4% (82.5) 17.4% (80.7) 18.4% (86.1) 19.7% (86.2) 33.7% (68.1) 47.5% 52.3%
Career 36.3% (90.4) - - 21.8% (82.5) 11.3% (82.5) 8.1% (77.2) - 22.6% (81.4) - 36.3% 63.7%

Jack Anderson Pitch › Results

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Year Team FF CSW% SI CSW% FC CSW% SL CSW% ST CSW% CB CSW% CH CSW% FS CSW% KN CSW% Fastball CSW% Secondary CSW%
2026 BOS 26.7% (0) - - 33.3% (4) 7.1% (1) 30.0% (2) - 25.0% (6) - 26.7% 25.3%
RP MLB Percentile 47 (91) - - 63 (57) 2 (84) 56 (57) - 46 (41) - 38.4% 29.6%
RP MLB AVG 26.7% (8) 28.3% (4) 28.0% (5) 29.9% (8) 28.1% (8) 26.9% (5) 22.0% (6) 25.9% (8) 21.9% (5) 27.8% 28.2%
Career 26.7% (0) - - 33.3% (4) 7.1% (1) 30.0% (2) - 25.0% (6) - 26.7% 25.3%

Jack Anderson Batted Ball › Contact

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Year Team GB% LD% FB% PU% SS% Pull% Cent% Oppo% Foul Str% PC% Fl&B% Solid% Brl% ICR
2026 BOS 37.5% 29.2% 20.8% 12.5% 33.3% 50.0% 20.8% 29.2% 23.4% 66.7% 16.7% 4.2% 12.5% 33.3%
RP MLB Percentile 26 17 36 70 52 78 8 72 96 72 82 66 16 69
RP MLB AVG 44.1% 21.5% 24.3% 10.2% 34.5% 42.2% 33.3% 24.6% 17.5% 62.1% 24.2% 6.1% 7.6% 37.6%
Career 37.5% 29.2% 20.8% 12.5% 33.3% 50.0% 20.8% 29.2% 23.4% 66.7% 16.7% 4.2% 12.5% 33.3%

Jack Anderson Batted Ball › Outcomes

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Year Team AVG wOBA BABIP BACON xAVG xwOBA xBABIP xwoBACON EV FB EV LA HR/FB ICR IPA%
2026 BOS .267 .318 .304 .333 .287 .371 .315 .436 85.2 94.1 11.8 20.0% 33.3% 25.0%
RP MLB Percentile 36 52 45 46 17 24 28 18 83 18 57 32 69 49
RP MLB AVG .248 .329 .298 .328 .240 .328 .284 .370 88.2 89.4 13.1 18.1% 37.6% 24.8%
Career .267 .318 .304 .333 .287 .371 .315 .436 85.2 94.1 11.8 20.0% 33.3% 25.0%

Jack Anderson Approach › Plate Discipline

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Year Team Zone% Str% Swing% O-Sw% Whiff% Foul Str% Con% Z-Con% O-Con% CS% SwStr% CSW% BIP% PLUS% IPR Str-ICR
2026 BOS 44.4% 68.5% 53.2% 39.1% 19.7% 23.4% 80.3% 89.7% 66.7% 15.3% 10.5% 25.8% 19.4% 62.1% 0.50 55.6%
RP MLB Percentile 52 91 92 92 22 96 22 17 24 34 34 23 82 88 53 85
RP MLB AVG 44.1% 62.8% 46.4% 30.6% 25.4% 17.5% 74.6% 83.9% 59.0% 16.5% 11.8% 28.3% 17.0% 57.3% 0.48 50.1%
Career 44.4% 68.5% 53.2% 39.1% 19.7% 23.4% 80.3% 89.7% 66.7% 15.3% 10.5% 25.8% 19.4% 62.1% 0.50 55.6%

Jack Anderson Approach › Locations

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Year Team Zone% aLoc% x-mLoc% gLoc% hiLoc% y-mLoc% loLoc% iLoc% oLoc% mmLoc%
2026 BOS 44.4% 25.8% 33.1% 41.1% 44.4% 18.5% 37.1% 22.6% 44.4% 7.3%
RP MLB Percentile 52 12 7 66 80 82 31 8 59 68
RP MLB AVG 44.1% 35.1% 26.6% 38.3% 36.0% 22.9% 41.1% 30.6% 42.7% 6.4%
Career 44.4% 25.8% 33.1% 41.1% 44.4% 18.5% 37.1% 22.6% 44.4% 7.3%

Jack Anderson Approach › Counts

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Year Team Early% Behind% 2-Str% Early BIP% F-Str% TF-Str% ECS% 2-Str O-Sw% PAR%
2026 BOS 58.1% 12.1% 30.6% 16.7% 60.6% 51.5% 18.1% 21.1% 15.8%
RP MLB Percentile 46 57 63 76 52 57 24 24 28
RP MLB AVG 58.5% 12.9% 29.2% 14.1% 59.6% 49.3% 21.0% 26.0% 19.4%
Career 58.1% 12.1% 30.6% 16.7% 60.6% 51.5% 18.1% 21.1% 15.8%

Jack Anderson PLV

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Year Team P PLV QP% AP% BP% Q-BP% MTK% HP HL PLA
2026 BOS 124 4.87 41.9% 21.0% 37.1% 4.8% 4.8% 0.6 +2 3.40
RP MLB Percentile 22 51 41 76 59 59 51 60 45 72
RP MLB AVG 244 4.78 41.2% 19.5% 39.3% 1.9% 5.6% 1.9 +2 4.35
Career 124 4.87 41.9% 21.0% 37.1% 4.8% 4.8% 0.6 +2 3.40
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